The top diagrams show the approximate ages at which
particular deciduous teeth usually appear. The ages at which
specific types of permanent teeth usually appear are shown
in the lower diagrams. Blue denotes erupting teeth; grey
denotes erupted deciduous teeth; white denotes erupted
The full deciduous set (left) consists of eight
incisors, four canines, and eight molars.
They usually start erupting at six months.
The full set of permanent teeth (below)
6 to 10 months: 8 to 12 months:
9 to 16 months:
13 to 19 months:
16 to 23 months: 23 to 33 months:
consists ofeight incisors, four canines,
eight premolars, and twelve molars.
They usually start erupting atsixyears.
6 to 7 years:
6 to 8 years:
7 to 9 years:
9 to 12 years:
10 to 12 years:
10 to 12 years:
11 to 13 years:
17 to 21 plus:
when an individual has been sitting too
close to a fire. The condition is most
common in elderly women.
Dryness and itching can often be
relieved by use of an
cream). The redness fades in time but
may not disappear entirely
A pink rash that appears and disappears
spontaneously and that may affect any
area of the body except the face. Erythe-
ma marginatum is a characteristic sign
A red, circular rash that occurs as a
result of infection with
Erythema migrans first appears at the
site of a bite from an infected tick.
The rash then expands, over a period of
days or weeks, to form a large, round
patch. Erythema migrans is most com-
m only found on the thighs, groin, or
trunk, or in the armpit.
sometimes of the
thin, moist tissue that lines body cavi-
ties), that is sometimes accompanied by
generalized illness. Erythema multiforme
means “skin redness of many varieties” .
Erythema multiforme can develop as an
adverse reaction to certain drugs or it
may accompany certain viral infections
Other possible causes of erythema
multiforme are pregnancy,
However, about half of
all cases occur for no apparent reason.
A symmetrical rash of red, frequently
itchy, spots erupts on the skin of the
limbs and, occasionally, on the face and
the rest of the body The spots may blis-
The rash of erythema multiforme
The spots of this rash are usually itchy. They may
form into target lesions (concentric rings of different
shades of red around a pale centre).
ter or form raised, pale-centred weals
known as target lesions. People suffer-
erythema multiforme may
have a fever,
In a more severe form of erythema
multiforme, known as
the mucous membranes of
the mouth, eyes, and genitals are all
affected and become ulcerated.
depends on the underlying cause. Any
causative drug treatment w ill be w ith-
drawn and any underlying condition
w ill be treated if possible.
may need intensive care.
A condition characterized by reddish-
purple, tender swellings on the legs.
Erythema nodosum is usually associated
w ith another illness.
The most common cause of erythema
nodosum is a
the throat. However, the condition is